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yap-6.3/H/yapio.h
2005-01-03 17:06:05 +00:00

378 lines
9.1 KiB
C

/*************************************************************************
* *
* YAP Prolog %W% %G%
* *
* Yap Prolog was developed at NCCUP - Universidade do Porto *
* *
* Copyright L.Damas, V.S.Costa and Universidade do Porto 1985-2003 *
* *
**************************************************************************
* *
* File: yapio.h *
* Last rev: 22/1/03 *
* mods: *
* comments: Input/Output information *
* *
*************************************************************************/
#ifdef SIMICS
#undef HAVE_LIBREADLINE
#endif
#include <stdio.h>
#ifndef YAP_STDIO
#define YP_printf printf
#define YP_putchar putchar
#define YP_getc getc
#define YP_fgetc fgetc
#define YP_getchar getchar
#define YP_fgets fgets
#define YP_clearerr clearerr
#define YP_feof feof
#define YP_ferror ferror
#if _MSC_VER || defined(__MINGW32__)
#define YP_fileno _fileno
#else
#define YP_fileno fileno
#endif
#define YP_fopen fopen
#define YP_fclose fclose
#define YP_ftell ftell
#define YP_fseek fseek
#define YP_setbuf setbuf
#define YP_fputs fputs
#define YP_ungetc ungetc
#define YP_fdopen fdopen
#define init_yp_stdio()
#if _MSC_VER || defined(__MINGW32__)
#define open _open
#define close _close
#define popen _popen
#define pclose _pclose
#define read _read
#define write _write
#define isatty _isatty
#define putenv(S) _putenv(S)
#define chdir(P) _chdir(P)
#define getcwd(B,S) _getcwd(B,S)
#endif
#define YP_FILE FILE
extern YP_FILE *Yap_stdin;
extern YP_FILE *Yap_stdout;
extern YP_FILE *Yap_stderr;
int STD_PROTO(YP_putc,(int, int));
#else
#ifdef putc
#undef putc
#undef getc
#undef putchar
#undef getchar
#undef stdin
#undef stdout
#undef stderr
#endif
#define printf ERR_printf
#define fprintf ERR_fprintf
#define putchar ERR_putchar
#define putc ERR_putc
#define getc ERR_getc
#define fgetc ERR_fgetc
#define getchar ERR_getchar
#define fgets ERR_fgets
#define clearerr ERR_clearerr
#define feof ERR_feof
#define ferror ERR_ferror
#define fileno ERR_fileno
#define fopen ERR_fopen
#define fclose ERR_fclose
#define fflush ERR_fflush
/* flags for files in IOSTREAM struct */
#define _YP_IO_WRITE 1
#define _YP_IO_READ 2
#define _YP_IO_ERR 0x04
#define _YP_IO_EOF 0x08
#define _YP_IO_FILE 0x10
#define _YP_IO_SOCK 0x20
typedef struct IOSTREAM {
int check;
int fd; /* file descriptor */
int flags;
int cnt;
int buflen;
char buf[2];
char *ptr;
char *base;
int (*close)(int fd); /* close file */
int (*read)(int fd, char *b, int n); /* read bytes */
int (*write)(int fd, char *b, int n);/* write bytes */
} YP_FILE;
#define YP_stdin &yp_iob[0]
#define YP_stdout &yp_iob[1]
#define YP_stderr &yp_iob[2]
#define YP_getc(f) (--(f)->cnt < 0 ? YP_fillbuf(f) : *((unsigned char *) ((f)->ptr++)))
#define YP_fgetc(f) YP_fgetc(f)
#define YP_putc(c,f) (--(f)->cnt < 0 ? YP_flushbuf(c,f) : (unsigned char) (*(f)->ptr++ = (char) c))
#define YP_putchar(cc) YP_putc(cc,YP_stdout)
#define YP_getchar() YP_getc(YP_stdin)
int YP_fillbuf(YP_FILE *f);
int YP_flushbuf(int c, YP_FILE *f);
int YP_printf(char *, ...);
int YP_fprintf(YP_FILE *, char *, ...);
char* YP_fgets(char *, int, YP_FILE *);
char* YP_gets(char *);
YP_FILE *YP_fopen(char *, char *);
int YP_fclose(YP_FILE *);
int YP_fileno(YP_FILE *);
int YP_fflush(YP_FILE *);
int YP_feof(YP_FILE *);
int YP_ftell(YP_FILE *);
int YP_fseek(YP_FILE *, int, int);
int YP_clearerr(YP_FILE *);
void init_yp_stdio(void);
int YP_fputs(char *s, YP_FILE *f);
int YP_puts(char *s);
int YP_setbuf(YP_FILE *f, char *buf);
#define YP_MAX_FILES 40
extern YP_FILE yp_iob[YP_MAX_FILES];
#endif /* YAP_STDIO */
typedef YP_FILE *YP_File;
enum TokenKinds {
Name_tok,
Number_tok,
Var_tok,
String_tok,
Ponctuation_tok,
Error_tok,
eot_tok
};
typedef struct TOKEN {
unsigned char Tok;
Term TokInfo;
int TokPos;
struct TOKEN *TokNext;
} TokEntry;
#define Ord(X) ((int) (X))
#define NextToken GNextToken()
typedef struct VARSTRUCT {
Term VarAdr;
CELL hv;
struct VARSTRUCT *VarLeft, *VarRight;
char VarRep[1];
} VarEntry;
/* Character types for tokenizer and write.c */
#define UC 1 /* Upper case */
#define UL 2 /* Underline */
#define LC 3 /* Lower case */
#define NU 4 /* digit */
#define QT 5 /* single quote */
#define DC 6 /* double quote */
#define SY 7 /* Symbol character */
#define SL 8 /* Solo character */
#define BK 9 /* Brackets & friends */
#define BS 10 /* Blank */
#define EF 11 /* End of File marker */
#define CC 12 /* comment char % */
#define EOFCHAR EOF
#if USE_SOCKET
/****************** defines for sockets *********************************/
typedef enum{ /* in YAP, sockets may be in one of 4 possible status */
new_socket,
server_socket,
client_socket,
server_session_socket,
closed_socket
} socket_info;
typedef enum{ /* we accept two domains for the moment, IPV6 may follow */
af_inet, /* IPV4 */
af_unix /* or AF_FILE */
} socket_domain;
Term STD_PROTO(Yap_InitSocketStream,(int, socket_info, socket_domain));
int STD_PROTO(Yap_CheckSocketStream,(Term, char *));
socket_domain STD_PROTO(Yap_GetSocketDomain,(int));
socket_info STD_PROTO(Yap_GetSocketStatus,(int));
void STD_PROTO(Yap_UpdateSocketStream,(int, socket_info, socket_domain));
/* routines in ypsocks.c */
Int STD_PROTO(Yap_CloseSocket,(int, socket_info, socket_domain));
#endif /* USE_SOCKET */
/* info on aliases */
typedef struct AliasDescS {
Atom name;
int alias_stream;
} * AliasDesc;
/****************** character definition table **************************/
#define NUMBER_OF_CHARS 256
extern char *Yap_chtype;
/* parser stack, used to be AuxSp, now is ASP */
#define ParserAuxSp ScannerStack
/* routines in parser.c */
VarEntry STD_PROTO(*Yap_LookupVar,(char *));
Term STD_PROTO(Yap_VarNames,(VarEntry *,Term));
/* routines in scanner.c */
TokEntry STD_PROTO(*Yap_tokenizer,(int));
#if USE_SYSTEM_MALLOC
void STD_PROTO(Yap_clean_tokenizer,(TokEntry *, VarEntry *, VarEntry *));
#else
#define Yap_clean_tokenizer(T,V,A)
#endif
Term STD_PROTO(Yap_scan_num,(int (*)(int)));
char STD_PROTO(*Yap_AllocScannerMemory,(unsigned int));
/* routines in iopreds.c */
Int STD_PROTO(Yap_FirstLineInParse,(void));
int STD_PROTO(Yap_CheckIOStream,(Term, char *));
int STD_PROTO(Yap_GetStreamFd,(int));
void STD_PROTO(Yap_CloseStreams,(int));
void STD_PROTO(Yap_CloseStream,(int));
int STD_PROTO(Yap_PlGetchar,(void));
int STD_PROTO(Yap_PlFGetchar,(void));
int STD_PROTO(Yap_GetCharForSIGINT,(void));
int STD_PROTO(Yap_StreamToFileNo,(Term));
Term STD_PROTO(Yap_OpenStream,(FILE *,char *,Term,int));
Term STD_PROTO(Yap_StringToTerm,(char *,Term *));
Term STD_PROTO(Yap_TermToString,(Term,char *,unsigned int,int));
int STD_PROTO(Yap_GetFreeStreamD,(void));
extern int
Yap_c_input_stream,
Yap_c_output_stream,
Yap_c_error_stream;
#define YAP_INPUT_STREAM 0x01
#define YAP_OUTPUT_STREAM 0x02
#define YAP_APPEND_STREAM 0x04
#define YAP_PIPE_STREAM 0x08
#define YAP_TTY_STREAM 0x10
#define YAP_POPEN_STREAM 0x20
#define YAP_BINARY_STREAM 0x40
#define YAP_SEEKABLE_STREAM 0x80
#define Quote_illegal_f 1
#define Ignore_ops_f 2
#define Handle_vars_f 4
#define Use_portray_f 8
#define To_heap_f 16
/* write.c */
void STD_PROTO(Yap_plwrite,(Term,int (*)(int, int),int));
/* grow.c */
int STD_PROTO(Yap_growstack_in_parser, (tr_fr_ptr *, TokEntry **, VarEntry **));
int STD_PROTO(Yap_growtrail_in_parser, (tr_fr_ptr *, TokEntry **, VarEntry **));
#if HAVE_ERRNO_H
#include <errno.h>
#else
extern int errno;
#endif
#if DEBUG
#if COROUTINING
extern int Yap_Portray_delays;
#endif
#endif
EXTERN inline UInt STD_PROTO(HashFunction, (char *));
EXTERN inline UInt
HashFunction(char *CHP)
{
/* djb2 */
UInt hash = 5381;
UInt c;
while ((c = *CHP++) != '\0') {
/* hash = ((hash << 5) + hash) + c; hash * 33 + c */
hash = hash * 33 ^ c;
}
return hash;
/*
UInt OUT=0, i = 1;
while(*CHP != '\0') { OUT += (UInt)(*CHP++); }
return OUT;
*/
}
#define FAIL_ON_PARSER_ERROR 0
#define QUIET_ON_PARSER_ERROR 1
#define CONTINUE_ON_PARSER_ERROR 2
#define EXCEPTION_ON_PARSER_ERROR 3
#ifdef THREADS
#define Yap_IOBotch Yap_thread_gl[worker_id].io_botch
#define Yap_tokptr Yap_thread_gl[worker_id].tokptr
#define Yap_toktide Yap_thread_gl[worker_id].toktide
#define Yap_VarTable Yap_thread_gl[worker_id].var_table
#define Yap_AnonVarTable Yap_thread_gl[worker_id].anon_var_table
#define Yap_eot_before_eof Yap_thread_gl[worker_id].eot_before_eof
#define Yap_FileNameBuf Yap_thread_gl[worker_id].file_name_buf
#define Yap_FileNameBuf2 Yap_thread_gl[worker_id].file_name_buf2
#else
extern jmp_buf Yap_IOBotch;
/*************** variables concerned with parsing *********************/
extern TokEntry *Yap_tokptr, *Yap_toktide;
extern VarEntry *Yap_VarTable, *Yap_AnonVarTable;
extern int Yap_eot_before_eof;
extern char Yap_FileNameBuf[YAP_FILENAME_MAX], Yap_FileNameBuf2[YAP_FILENAME_MAX];
#endif
#ifdef DEBUG
extern YP_FILE *Yap_logfile;
#endif
#if USE_SOCKET
extern int Yap_sockets_io;
#endif